
/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_CYCLE_H_INCLUDED_
#define _NGX_CYCLE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


#ifndef NGX_CYCLE_POOL_SIZE
#define NGX_CYCLE_POOL_SIZE NGX_DEFAULT_POOL_SIZE
#endif


#define NGX_DEBUG_POINTS_STOP  1
#define NGX_DEBUG_POINTS_ABORT 2


typedef struct ngx_shm_zone_s ngx_shm_zone_t;

typedef ngx_int_t (*ngx_shm_zone_init_pt)(ngx_shm_zone_t *zone, void *data);

struct ngx_shm_zone_s
{
    void                *data;
    ngx_shm_t            shm;
    ngx_shm_zone_init_pt init;
    void                *tag;
    void                *sync;
    ngx_uint_t           noreuse; /* unsigned  noreuse:1; */
};


struct ngx_cycle_s
{
    void    ****conf_ctx;
    ngx_pool_t *pool;

    ngx_log_t *log;
    ngx_log_t  new_log;

    ngx_uint_t log_use_stderr; /* unsigned  log_use_stderr:1; */

    ngx_connection_t **files;
    ngx_connection_t  *free_connections;
    ngx_uint_t         free_connection_n;

    ngx_module_t **modules;
    ngx_uint_t     modules_n;
    ngx_uint_t     modules_used; /* unsigned  modules_used:1; */

    ngx_queue_t reusable_connections_queue;
    ngx_uint_t  reusable_connections_n;

    ngx_array_t listening;
    ngx_array_t paths;

    ngx_array_t       config_dump;
    ngx_rbtree_t      config_dump_rbtree;
    ngx_rbtree_node_t config_dump_sentinel;

    ngx_list_t open_files;
    ngx_list_t shared_memory;

    ngx_uint_t connection_n;
    ngx_uint_t files_n;

    ngx_connection_t *connections;
    ngx_event_t      *read_events;
    ngx_event_t      *write_events;
#if (NGX_SSL && NGX_SSL_ASYNC)
    ngx_event_t *async_events;
#endif

    ngx_cycle_t *old_cycle;

    ngx_str_t conf_file;
    ngx_str_t conf_param;
    ngx_str_t conf_prefix;
    ngx_str_t prefix;
    ngx_str_t lock_file;
    ngx_str_t hostname;
#if (NGX_SSL && NGX_SSL_ASYNC)
    ngx_flag_t no_ssl_init;
#endif
};


typedef struct
{
    ngx_flag_t daemon;
    ngx_flag_t master;

    ngx_msec_t timer_resolution;
    ngx_msec_t shutdown_timeout;

    ngx_int_t worker_processes;
    ngx_int_t debug_points;

    ngx_int_t rlimit_nofile;
    off_t     rlimit_core;

    int priority;

    ngx_uint_t    cpu_affinity_auto;
    ngx_uint_t    cpu_affinity_n;
    ngx_cpuset_t *cpu_affinity;

    char     *username;
    ngx_uid_t user;
    ngx_gid_t group;

    ngx_str_t working_directory;
    ngx_str_t lock_file;

    ngx_str_t pid;
    ngx_str_t oldpid;

    ngx_array_t env;
    char      **environment;

    ngx_uint_t transparent; /* unsigned  transparent:1; */
} ngx_core_conf_t;


#define ngx_is_init_cycle(cycle) (cycle->conf_ctx == NULL)


ngx_cycle_t    *ngx_init_cycle(ngx_cycle_t *old_cycle);
ngx_int_t       ngx_create_pidfile(ngx_str_t *name, ngx_log_t *log);
void            ngx_delete_pidfile(ngx_cycle_t *cycle);
ngx_int_t       ngx_signal_process(ngx_cycle_t *cycle, char *sig);
void            ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user);
char          **ngx_set_environment(ngx_cycle_t *cycle, ngx_uint_t *last);
ngx_pid_t       ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv);
ngx_cpuset_t   *ngx_get_cpu_affinity(ngx_uint_t n);
ngx_shm_zone_t *ngx_shared_memory_add(ngx_conf_t *cf, ngx_str_t *name,
                                      size_t size, void *tag);
void            ngx_set_shutdown_timer(ngx_cycle_t *cycle);


extern volatile ngx_cycle_t *ngx_cycle;
extern ngx_array_t           ngx_old_cycles;
extern ngx_module_t          ngx_core_module;
extern ngx_uint_t            ngx_test_config;
extern ngx_uint_t            ngx_dump_config;
extern ngx_uint_t            ngx_quiet_mode;
#if (T_NGX_SHOW_INFO)
extern ngx_uint_t ngx_show_modules;
extern ngx_uint_t ngx_show_directives;
#endif


#endif /* _NGX_CYCLE_H_INCLUDED_ */
